dumbbell lying one arm supinated triceps extension

Instructions

1. 1

   Étape 1: Lie flat on a bench with your back and head supported, and your feet flat on the ground.

2. 2

   Étape 2: Hold a dumbbell in one hand with an underhand grip, and extend your arm straight up above your shoulder.

3. 3

   Étape 3: Keeping your upper arm stationary, slowly lower the dumbbell behind your head by bending your elbow.

4. 4

   Étape 4: Pause for a moment at the bottom, then extend your arm back up to the starting position.

5. 5

   Étape 5: Repeat for the desired number of repetitions, then switch arms.